Title :
Preliminary study of rotary motion blurs in a novel industry CT imaging system
Author :
Chang, Ming ; Xiao, Yongshun ; Chen, Zhiqiang ; Li, Liang ; Zhang, Li
Author_Institution :
Dept. of Eng. Phys., Tsinghua Univ., Beijing, China
Abstract :
In order to detect parts deformation during industry test, a novel industry computed tomography (ICT) system taking advantage of the rotation of specimens itself was purposed by us. However the rotary motion blur is introduced into the reconstruction image due to the dynamic data acquisition in the system. This article presents a simulation of the data acquisition to analyze the image blurs in the reconstruction and evaluate methods to deblur motion blurred images. Image retrieval algorithms are employed to correct the reconstructed image directly and to correct the projection before reconstruction expecting to suppress the rotary motion blur respectively. Estimation of motion parameters is also included in our work. Furthermore numerical simulations are performed to demonstrate the effectiveness of these methods.
Keywords :
computerised tomography; data acquisition; image reconstruction; image restoration; image retrieval; inspection; nondestructive testing; numerical analysis; deblur motion; dynamic data acquisition; image blurs; image reconstruction; image retrieval algorithms; industry CT imaging system; industry computed tomography system; industry test; motion parameters; numerical simulations; rotary motion blur; specimen rotation; Convolution; Detectors; Materials; Phantoms;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154616